SN75155DR

Product Overview

• Category: Integrated Circuit
• Use: Line Driver/Receiver
• Characteristics:
  • High-speed, low-power device
  • Designed for balanced transmission lines
  • Compatible with RS-422 and RS-423 standards
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Provides reliable data communication over long distances
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.75V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Data Rate: Up to 10 Mbps
• Number of Channels: 1
• Input Threshold Voltage: ±200mV
• Output Voltage Swing: ±2V
• Propagation Delay Time: 20ns

Detailed Pin Configuration

The SN75155DR has a total of 16 pins arranged as follows:

1. GND (Ground)
2. A (Non-Inverting Data Input)
3. B (Inverting Data Input)
4. Y (Data Output)
5. Z (Complementary Data Output)
6. VCC (Positive Power Supply)
7. RE (Receiver Enable)
8. DE (Driver Enable)
9. RO (Receiver Output)
10. DI (Driver Input)
11. D (Driver Output)
12. R (Receiver Input)
13. S (Shutdown)
14. NC (No Connection)
15. NC (No Connection)
16. GND (Ground)

Functional Features

• Balanced Transmission: The SN75155DR is specifically designed for balanced transmission lines, ensuring reliable data communication over long distances.
• Compatibility: It is fully compatible with the RS-422 and RS-423 standards, making it suitable for various industrial applications.
• High-Speed Operation: With a data rate of up to 10 Mbps, this device enables fast and efficient data transmission.
• Low Power Consumption: The SN75155DR is a low-power device, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Reliable data communication over long distances - Compatibility with industry standards - High-speed operation - Low power consumption

Disadvantages: - Limited number of channels (only 1) - Requires additional external components for complete functionality

Working Principles

The SN75155DR works by receiving differential input signals (A and B) and converting them into single-ended outputs (Y and Z). It uses internal circuitry to balance the transmission line and provide reliable data communication. The driver and receiver enable pins (DE and RE) control the direction of data flow. The device operates on a positive power supply (VCC) and has a shutdown pin (S) for power-saving purposes.

Detailed Application Field Plans

The SN75155DR is commonly used in various industrial applications that require reliable data communication over long distances. Some specific application fields include:

1. Industrial Automation: Used in PLC (Programmable Logic Controller) systems for transmitting control signals between different modules.
2. Telecommunications: Employed in data transmission equipment for long-distance communication between network devices.
3. Automotive Electronics: Integrated into automotive systems for transmitting sensor data and control signals between different components.
4. Medical Devices: Utilized in medical equipment for transmitting patient data and control signals between devices.

Detailed and Complete Alternative Models

1. MAX485: Similar line driver/receiver IC with enhanced ESD protection and higher data rate capability.
2. LTC2862: Differential bus transceiver with extended temperature range and low quiescent current.
3. SN65HVD178x: RS-485 transceiver family with higher data rates and improved noise immunity.

(Note: This list is not exhaustive and there are several other alternative models available in the market.)

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